Notices
991 GT3, GT3RS, GT2RS and 911R 2012-2019
Sponsored by:
Sponsored by:

Ask Chaosoul's Magic 8 Ball

Thread Tools
 
Search this Thread
 
Old 05-26-2017, 10:55 AM
  #601  
NateOZ
Race Car
 
NateOZ's Avatar
 
Join Date: Feb 2014
Location: New York
Posts: 3,530
Received 29 Likes on 22 Posts
Default

Originally Posted by bronson7
Hey Nate, I thought you said a few months back that you were going to step aside for a while with Porsche and now you're saying you have 3 different models on order (I believe). I love it, you're "Top Notch".
Lol - I haven't picked up a new Porsche this year so that it stepping aside for a period. It's my dealers fault, they waved an allocation in my face for the GT3...
Old 05-26-2017, 11:40 AM
  #602  
sdq7
Rennlist Member
 
sdq7's Avatar
 
Join Date: Aug 2009
Posts: 227
Likes: 0
Received 11 Likes on 8 Posts
Default

I heard a rumor that the magnesium roof for the RS will not continue due to cost and delays in manufacturing in multiple locations. Do you have any info there?
Old 05-26-2017, 01:34 PM
  #603  
Guest89
Drifting
 
Guest89's Avatar
 
Join Date: Mar 2010
Location: CHI / ATL
Posts: 2,793
Received 201 Likes on 116 Posts
Default

Originally Posted by robmypro
I am not sure why Porsche would go 9,500 redline when 9,000 would satisfy everyone. 9k redline, 550hp, MT. That alone does it imo.
How can they make 550 bhp from a 4.0 liter 9K redline street engine???

Why not make 1,000 bhp from the same engine? Why stop there - maybe 2,000 bhp?

The factory prefers to spin the race cars higher rather than go beyond 4.0 liters
Old 05-26-2017, 02:21 PM
  #604  
ChicagoM4
Instructor
 
ChicagoM4's Avatar
 
Join Date: Mar 2015
Posts: 246
Received 10 Likes on 4 Posts
Default

Originally Posted by Guest89
How can they make 550 bhp from a 4.0 liter 9K redline street engine???

Why not make 1,000 bhp from the same engine? Why stop there - maybe 2,000 bhp?

The factory prefers to spin the race cars higher rather than go beyond 4.0 liters
In reality, the 991.2 GT3 engine is making more than 500hp already due to the less resistant engine, ram air, and other tweaks compared to the similar 500hp 991.1 gt3RS engine.
Old 05-26-2017, 02:32 PM
  #605  
mass27
Burning Brakes
 
mass27's Avatar
 
Join Date: Nov 2007
Posts: 1,128
Received 275 Likes on 116 Posts
Default

^ It makes more than 500HP.

Which is more likely, after 7 years (RS 4.0), the engineers at PAG were able to extra more than 500HP OR an RS is an RS.
Old 05-26-2017, 02:42 PM
  #606  
GrantG
Addict
Rennlist Member

 
GrantG's Avatar
 
Join Date: Jun 2002
Location: Denver
Posts: 18,017
Received 4,945 Likes on 2,801 Posts
Default

Originally Posted by robmypro
I am not sure why Porsche would go 9,500 redline when 9,000 would satisfy everyone. 9k redline, 550hp, MT. That alone does it imo.
The implied reason is to make more power. The current 4.0 motor makes "only" 500hp with a 9k redline. So, where does the extra 10% power come from? 10% more from same NA displacement is only really possible by spinning it harder and/or increasing compression (already really high for pump gas), and/or improving breathing (already really good for stringent noise/emissions regs).

Granted, the current motor makes its peak power at 8,250 rpm, but you want the redline to be beyond the power peak so that the motor is close to the power peak for more of the time (average is better if you spend time under and over the peak).

So, if they could make the motor make 550hp at 8,900 rpm (with more aggressive cam profiles, larger diameter intake tracts, etc.), then having a 9,600rpm redline would be pretty great...

Making 550hp from 4.0L is 137.5 HP/L and the current champ in that regard is the Speciale which makes 133.3 HP/L at 9k. To move the state of the art forward on this spec, we're going to have to see more revs, imo. This is just hypothetical though based on OP's statement...
Old 05-26-2017, 02:50 PM
  #607  
neanicu
Nordschleife Master
 
neanicu's Avatar
 
Join Date: Apr 2010
Location: Ny
Posts: 9,970
Received 350 Likes on 212 Posts
Default

Originally Posted by ChicagoM4
In reality, the 991.2 GT3 engine is making more than 500hp already due to the less resistant engine, ram air, and other tweaks compared to the similar 500hp 991.1 gt3RS engine.
I bet you it makes EXACTLY what it's rated for! This has been proven in independent testing of past and current GT cars.
One thing I can agree with is the RAM air effect. It's just like turbocharging at a lower scale and it manifests only at speed. It basically rams air into the engine,so the computer dumps more fuel=more power.
Can one extract more power from these NA engines? Yes,but very little and it basically happens by eliminating restrictions in the exhaust and a bit of tuning.
Is Porsche a company that boasts unrealistic performance numbers? Definitely not! They are actually conservative regarding their performance numbers,but I can assure you that these engines make exactly what they say they make! Please take AP's marketing talk about " GT horse power " with a HUGE grain of salt.
Old 05-26-2017, 03:01 PM
  #608  
GrantG
Addict
Rennlist Member

 
GrantG's Avatar
 
Join Date: Jun 2002
Location: Denver
Posts: 18,017
Received 4,945 Likes on 2,801 Posts
Default

Originally Posted by ChicagoM4
In reality, the 991.2 GT3 engine is making more than 500hp already due to the less resistant engine, ram air, and other tweaks compared to the similar 500hp 991.1 gt3RS engine.
Whether or not this is true is not important in this context. If they claim the RS makes 550hp, it will have to make 50hp more than whatever the GT3 makes. All these cars get dyno'd in the Supertest and if the RS makes only 12hp more than the GT3 (because the GT3 really makes 538 hp and the RS makes its 550hp rated power, for example) is not going to fly...
Old 05-27-2017, 02:41 AM
  #609  
C.J. Ichiban
Platinum Dealership
Rennlist
Site Sponsor

 
C.J. Ichiban's Avatar
 
Join Date: Sep 2005
Location: Exit Row seats
Posts: 9,766
Received 2,060 Likes on 579 Posts
Default

Originally Posted by mass27
^ It makes more than 500HP.

Which is more likely, after 7 years (RS 4.0), the engineers at PAG were able to extra more than 500HP OR an RS is an RS.
500 is 500


Da Bears.
Old 05-27-2017, 03:32 AM
  #610  
chaosoul
Pro
Thread Starter
 
chaosoul's Avatar
 
Join Date: Mar 2017
Location: Driver seat
Posts: 571
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by hayn911gt3
Hey chaosoul. Awesome thread! Quick question. Why is HUD not available for GT cars?

Because Porsche.

Originally Posted by Dewinator
Due to the lack of value proposition in sticking a $250k hud in a $150k car. Also the hardware of a real hud would extend beyond the front of the vehicle.


Hmmmm.... Ballistic grade, thermally & noise insulated, OLED embedded full windshield? Coming soon as an exclusive option to Porsche models.
Old 05-27-2017, 03:33 AM
  #611  
chaosoul
Pro
Thread Starter
 
chaosoul's Avatar
 
Join Date: Mar 2017
Location: Driver seat
Posts: 571
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by sdq7
I heard a rumor that the magnesium roof for the RS will not continue due to cost and delays in manufacturing in multiple locations. Do you have any info there?


I've heard but no confirmation.


It is quite a funny process to make it.
Old 05-27-2017, 03:34 AM
  #612  
gago1101
Rennlist Member
 
gago1101's Avatar
 
Join Date: Nov 2013
Location: SoCal
Posts: 836
Received 18 Likes on 9 Posts
Default

Originally Posted by chaosoul
Hmmmm.... Ballistic grade, thermally & noise insulated, OLED embedded full windshield? Coming soon as an exclusive option to Porsche models.
F...k yeah
Old 05-27-2017, 04:30 AM
  #613  
Dewinator
Drifting
 
Dewinator's Avatar
 
Join Date: May 2015
Posts: 3,096
Received 44 Likes on 36 Posts
Default

Originally Posted by chaosoul
Hmmmm.... Ballistic grade, thermally & noise insulated, OLED embedded full windshield? Coming soon as an exclusive option to Porsche models.
Most of your words make no sense. A quarter of a million gets you a regular simple green lines 2 pane 6" x 8" HUD.
Old 05-27-2017, 04:53 AM
  #614  
DannieK
Rennlist Member
 
DannieK's Avatar
 
Join Date: May 2015
Posts: 196
Likes: 0
Received 4 Likes on 1 Post
Default

Hey Chaos.....not sure if this has been asked, but have you heard anything about resurrection of the 960?
Old 05-27-2017, 05:28 AM
  #615  
chaosoul
Pro
Thread Starter
 
chaosoul's Avatar
 
Join Date: Mar 2017
Location: Driver seat
Posts: 571
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Dewinator
Most of your words make no sense. A quarter of a million gets you a regular simple green lines 2 pane 6" x 8" HUD.


If by the word "most" you mean 3 out of the 19 words (16%), then yes, most doesn't make sense.


Oh, also its a joke.


Also, HUD developed for cars for mass produced will not cost 250k. We don't need aircraft HUD that needs FAA regulation and aircraft certification for stress, strength, fatigue, flammability, etc. Its like putting the 50k $ aircraft microwave into an RV for the road.


Quick Reply: Ask Chaosoul's Magic 8 Ball



All times are GMT -3. The time now is 09:30 AM.